Paper-bag machine



2 Sheets-Sheet 1.

(No Model.)

W. 0. CROSS. Paper BagMaJchine.

Patented July 13,1880.

N-PETERS, PHOTO-LITHOGRAPHER. WLSHINGTON, D 04 (No Model.) 2 Sheets-Shet2.

W. O. GROSS. I Paper Bag Machine. I No. 229,970. Patented July 13, 1880.

William aqryr,

N- PETERRPNOYULI'IHOGRAPHER, WASHINGTON. D. C.

NITED STATES WILLIAM G. CROSS, OF BOSTON, MASSACHUSETTS.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent -No. 229,970, dated July13, 1880, Application filed June 2, 1880. (No model.)

To all whom "it may concern:

Be it known that 1, WILLIAM G. Onoss, of Boston, Massachusetts, haveinvented certain new and useful Improvements in Machines for MakingSatchel-Bottom PaperBags, of which the following is a specification.

My invention relates to that kind of satchelbottom paper-bag machines inwhich is employed a guide-finger to push back a portion of the edge ofthe paper tube, in combination with a follower for conducting the tubeto the guide-finger and a blade for pushing the paper tube under saidguide-finger for the purpose of forming the first or diamond fold. Sucha machine is shown in Margaret E. Knights Patent No. 116,842, dated July11, 1871, and in an improved form in my Letters Patent No. 215,578,dated May20, 1879.

In this kind of machine the blank must be at rest during the formationof the second fold, and in order to permit the blank to be thustemporarily stationary it has been customary heretofore to employ an'intermittent feed, which is inactive while the second fold is beingformed.

It is my object to so organize and combine the parts of this machine asto do away with the necessity for an intermittent feed movement, and topermit the use of a continuously moving and operating feed mechanism.

To this end I mount the folding devices upon alongitudinally-reciprocating frame, which is arranged andoperated tomove forward during the time the blank is at rest upon thefolding-table, and to then return to its original position to receivethe front end of the paper tube which forms the nextsucceeding blank.With this instrumentality I combine a continuous feed, whichunintermittently and uniformly feeds forward toward the folding devicesthe paper tube. The forward movement of the folding-frame-that is tosay, the frame which carries the folding devices--enables me to carrythe devices out of the way of the continuously-advancing tube, while thesubsequent rearward movement of said frame enables me to bring saiddevices back into position to receive and act upon that part of the tubewhich forms the next succeeding blank.

The nature of my invention and the manner in which the same is or may becarried into effect will be understood by reference to the accompanyingdrawings, in which- Figure l is alongitndi nal vertical central sectionof so much of a paper-bag machine of the kind referred to as is neededto illustrate my invention. Fig. 2 is a side elevation of the same. Fig.3 is a sectional detail view to be hereinafter referred to.

" A is the main frame of the machine; B, the reciprocating follower. Ois the cutter; D, the feed-rollers. The follower, cutter, former, andfeed-rolls are arranged and supported in the main frame, and areoperated in substantially the same manner and by the same means asdescribed in the Letters Patent hereinbefore recited, save that thefeed-rolls, through the instrumentality of suitable gearing, asindicated in Fig. 2, have a continuous movement of rotation, thusoperating to unintermittently and continuously feed forward the papertube from which the blanks are out and the bags made. Furtherdescription of these parts and their actuating mechanism is notnecessary.

E is the guide-finger; F, the plate knife folder, so called; G, the sidefolders; H, the delivery-rolls, and I the vertically reciprocatingfoldingknife. The parts referred to cooperate with the follower and thecutter in the manner described in Letters Patent hereinbefore recited.The said parts also operate together, and are timed to move withrelation to one another, and have the same functions as thecorresponding parts shown in my Letters Patent aforesaid. They are alsocombined with substantially the same mechanisms for actuating them,respectively. They therefore, in the same foregoing respects, require nofurther description here; but the said parts just referred to are allmounted in or on a sliding carrier-frame, J, which is supported and heldin place on longitudinal guideways a on the main frame A, and is causedto move back and forth at the proper times by any suitable knowninstrumentalit-y, consisting in this instance of the draft-bar K, whichis longitudinally slotted at b, so as to straddle the camshaft L, and isprovided with a roller stud or projection, 0, bearing against theperiphery of the cam d, which is liked to and revolves with shaft L.Springs 0 hold the stud against the cam. Through the instrumentality ofthese devices there is imparted to the frame J, when the machine is inoperation, backward and forward movements, which can be properly ti medand regulated as to length by suitably fashioning the cam 61.

To maintain proper operative connection between the driving orfirst-motion shaft on the main frame and the folder-actuating mechanismson the sliding carrier-frame, I employ a transmitting shaft, M,supported at one end in a bearing,f, on the main frame, in which it isfree to rotate, but restrained from ,longitudinal movement. At the otherend it passes through the hub of a beveled gear, g, in which it canslide freely, being connected. however, with said gear by aspline-andgroove connection, as shown more particularly in Fig. 3. Thebeveled gear g is carried by and adapted to rotate in a bearing, h,fixed to the sliding carrierframe. The shaft M obtains rotary movementfrom a bevel-gear, i, which is fixed to it and meshes with acorresponding gear, t", on one of therotating shafts in the main frame,and this rotary movement is imparted, through the instrumentality ofgears g and g, to the shaft J in the sliding carrier-frame, from whichthe various moving parts carried by the carrying-frame are actuated.

The spline-and-groove connection between the gear 9 and the shaft Mallows the carrier frame to slide freely longitudinally withoutinterfering with the transmission of power to the folder-actuatingmechanism.

In concluding my description of the construction of the machine, Iremark that it should contain the usual pasting devices, which, however,I have not deemed it necessary to show in the drawings.

In so far as the action of the folding devices on the blank isconcerned, this machine in nowise substantially differs from the othermachines hereinbefore referred to, and the follower and cutter are alsotimed to move relatively to the folding devices substantially in thesame way. i

The noticeable difierences between the operation of this machine andthose referred to are as follows: The feed, instead of beingintermittent, is continuous, so that the tube from which the blanks aresuccessively cut and made into bags moves forward unceasingly. At thatpoint in the operation of the machine at which the feed heretofore wasstopped that is to say, when the side folders have taken hold of or areabout to take hold of the blankthe sliding carrierframe begins itsforward movement, thus getting the blank which is on the table out ofthe way of the advancing paper tube. The folding devices continue theiroperation upon the blank during the movement of the carrier-frame, thebag is completed and delivered, and the frame returns to its firstposition in time to bring the guide-finger in position to receive thenext succeeding blank, and so on indefinitely.

Having described myinvention, whatIclaim, and desire to secure byLetters Patent, is

1. In machinery of the kind specified, the combination, with themechanisms for folding and completing the satchel-bottom, of areciprocating frame carrying said mechanisms and arranged and operatedto move when the blank is at rest on the folding-table, substantially asand for the purposes hereinbefore set forth.

2. In machinery of the kind specified, the combination, with thereciprocating carrierframe and mechanisms carried thereon for foldingand completing the satchel-bottom, of mechanism for continuously feedingthe paper tube, substantially as hereinbefore set forth.

3. The combination, substantially as hereinbefore set forth, of thecontinuous feed mechanism, the follower, the former, and the cutter withthe reciprocating frame and the folding mechanisms carried by saidframe.

In testimony whereof I have hereunto set my hand this 31st day of May,1880. 7

WILLIAM G. GROSS.

Witnesses:

GILBERT G. HOAG, MILTON RIGGARDI.

